18 The table below represents an account in a ﬁnancial book of a poultry farmer.

(a) identify the ﬁnancial book. (1 mark)

(b) On 10th January 20ll . the poultry farmer bought 5 bags of layers mash worth
Ksh. I000O/- and sold 100 trays of eggs for Ksh.2000O/- on 10 January 2011. Enter
these transactions in the account above.
(3 marks)

19 The following illustrations show different production function curves in agricultural
economics. Study them and answer the questions that follow.

(a) ldentify the production function curves labelled a and b. (2 marks)

a ............... ..

b ............... ..

(b) What does the law derived from the production function labelled C state? (1 mark)

(i) Which one of the three production function curves is rare in Agriculture?
(1 mark)

(ii) Give a reason for your answer in (c)(i) above. (1 mark)

20 The following is a list of plant nutrients; Copper, Calcium, Nitrogen, Molybdenum, Zinc,
Phosphorus. Carbon. Sulphur. Iron and Magnesium.

(a) Which of the above plant nutrients are:

(i) Answer any two questions from this section in the spaces provided after question

(6) Grading - is the sorting of the produce into different lots. each with the same characteristics market quality while Standardization is the establishment of uniformity in the quality and quantity of the product.

Mark as a whole 2 marks

(7) Beneﬁts of agroforestry to a maize crop.

Leguminous trees ﬁx nitrogen into the soil:

Trees act as windbreaks:

Trees stabilize soil against soil erosion;

Leaf litter decompose to form humus/recycle nutrients:

Trees improve and act as water catchment areas/conserve water.

4 x 1/2= 2 marks

(8)

Intensive hedgerow:- trees or shrubs are planted between rows of crops.

Border planting:- trees or shrubs are planted on the borders of the farm.

Mark as a whole 2 marks

(9) (a) Mixed cropping:- ls the growing of two or more crops on the same ﬁeld but on
different sections.

(b) Mono cropping:- Is the growing of only one type of crop.

(c) lnter cropping:- ls the growing of two or more crops in the same ﬁeld at the same time.3 x 1 3 marks

(10) Advantages of timely planting

Disease and pest control;

Beneﬁt from nitrogen ﬂash:

Weed control:

Maximises rainfall utilization by the crop:

Crop matures early when market prices are high/high demand.

(4 x 1/2 =2 marks)

(11) Advantages of row planting

Field operations can be mechanized;

Easy to establish plant population;

Low seed rate than broadcasting;

cultural practices/accept speciﬁc practices;

Ensures proper spacing

Ensures uniform germination of seeds.

(4 x 1/2= 2 marks)

(12) Importance of a nursery

Many seedlings can be produced in a small area;

Facilitates timely routine management practices:

best conditions for growth of seedlings:

Small seeds and delicate seedlings grow into healthy and vigorous seedlings to facilitate
transplanting;

Reduced growth period in the ﬁeld;

Excess seedlings can be sold for income:

Facilitate selection of healthy and vigorous/true to type seedlings for transplanting.

(4 x 1/2= 2 marks)

(13) (a)Monopoly:- Market dominated by only one seller:

(b) Monopsony:- Market dominated by only one buyer.
Mark as a whole 2 marks